Polysaccharide export protein (IPR003715)

Short name: Poly_export

Overlapping homologous superfamilies


Family relationships


The extracellular polysaccharide colanic acid (CA) is produced by species of the family Enterobacteriaceae. In Escherichia coli (strain K12) the CA cluster comprises 19 genes. The wzx gene encodes a protein with multiple transmembrane segments that may function in export of the CA repeat unit from the cytoplasm into the periplasm in a process analogous to O-unit export. The CA gene clusters may be involved in the export of polysaccharide from the cell [PMID: 8759852].

GO terms

Biological Process

GO:0015774 polysaccharide transport

Molecular Function

GO:0015159 polysaccharide transmembrane transporter activity

Cellular Component

GO:0016020 membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.